Sounds like you're referring to the standard context menu? That capability never existed in DesktopX to my knowledge. Maybe RightClick (Part of Object Desktop) is what you want?
My virtual setting is currently at 2 GB, twice my system ram. Is that your minimum? Somehow mine get's bumped back down to 1.5 GB
Ohh! Almost forgot to post what I intended. I've been using FileHamster by Mogware during my work process to do real time backups. It's a very basic application compared to KeepSafe but, does the trick for me.
I also get a balloon in sys tray that says Im out of virtual memory quite often when I work offline in desktopX ... Never had this myself. Works fine online or offline. Maybe look at adjusting your virtual memory size in System Properties? eg. System Properties|Advanced Tab|Performance Settings|Advanced Tabs ->Virtual Memory should be at the bottom